Cap-wrench



J. DUDEK.

CAP WRENCH,

APPLICATION FILED JULY 12. 1919.

1,363,316. v PatentedDec. 28, 1920.

UNITED STATES,

JOHN DUDEK, OF CAMPBELL, NEBRASKA.

GAY-WRENCH.

Application filed July 12, 1919.

To all whom it may concern:

Be it known that I, JOHN Dumas, a citizen of the United States, residing at Camp bell, in the county of Franklin and State of Nebraska, have invented a certain new and useful Improvement in Cap-'Wrenches, of which the following is a specification.

My invention relates to improvements in cap wrenches.

The object of my invention is to provlde a cap wrench for tightening and loosening the screw cap of an ordinary Mason jar, which is simple in construction, cheaply manufactured, durable, not liable to get out of order, and which is efiicient in operation.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawing which illustrates the preferred embodiment of my invention,

Figure 1 is a perspective view of my improved cap wrench.

Fig. 2 is a top view of the same.

Fig. 3 is a central vertical sectional view of the wrench, shown applied to an ordinary screw cap on a Mason jar, a portion of the latter being shown.

Similar reference characters designate similar parts in the different views.

1 and 2 designate respectively two jar members, each provided with an arcuate substantially semi-circular downwardly extending flange 3, preferably provided on its inner side with corrugations 4 and adapted to clamp one side of an ordinarv screw cap 5 of a common Mason jar 6. The members 1 and 2 are adapted to rest upon the top of the cap 5 and are pivoted together at one side of their centers and at the inner side of and adjacent to their peripheries by a vertical pin 7.

Respectively attached to the upper s1des of the jaw members 1 and 2, by any sultable means, such as rivets 8, are two handles 9, preferably of channel form and having their channels at their inner sides. The handles 9 where they are attached to the jaw members are doubled and flattened. The handles extend outwardly from the opposite side of the centers of the jaw members to the side in which the pivot 7 is located.

Each handle 9 is depressed inwardly from its outer side to form a transverse bridge portion 10, the sides of which are cut through so that an opening is formed Specification of Letters Patent.

Patented Dec. 28 1920.

Serial No. 310,303.

longitudinally between each bridge portion 10 and the inner side or bottom of the ad j acent channel.

A bow spring 11, preferably of round wire having a central coil 12, has its end portions extending respectively through the openings formed by the bridge portions '10, said bridge portions being afterward set down, that is forced outwardly, so as to form kinks 13 in the spring 11, whereby the spring is held firmly clamped to the handles 9.

By providing the channels at the inner sides of the handles 9, a space is provided to receive the coil 12 of the spring, when the handles 9 are forced nearly together when in the clamping position.

By providing the pivot 7 at the inner side of and closely adjacent to the peripheries of the jaw members 1 and 2, very great leverage is efi'ected by the jaw members at the portions of the cap where the clamping action is most efficient.

I do not limit my invention to the structure shown and described, as many modificatlons, within the scope of the appended claims, may be made without departing from the spirit of my invention.

What I claim is 1. A cap wrench comprising two jaw members adapted to rest upon the top of a jar cap and provided respectively with two downwardly extending arcuate flanges adapted to respectively clamp opposite sides of the cap, the jaw members being pivoted to each other at one side of their centers and at the inner side of and adjacent to their peripheries, two handles respectively attached to said members and extending outwardly at the opposite side of their centers, each of said handles having a channel on its inner side, and a depressed portion at its outer side which forms a bridge at the inner side and in the channel of the handle, and a spring having its ends respectively clamped between said bridges and the inner sides of said channels arranged to force the handles apart.

2. A cap wrench comprising two jaw members hinged together and arranged to respectively clamp opposite sides of a jar cap, two channel handles respectively attached to said jaw member, the channels being at the inner sides of said handles, each handle having a bridge portion depressed into the channel of the handle from the outer side thereof, the sides of the bridge being cut away to form an opening between the outer side of the bridge and the inner side of the channel, and a spring having its ends extending respectively through said openings between said bridges and the inner sides of said channels, the bridges after the insertion of said spring being set down to form kinks in the spring, the tension of the spring serving to force the handles apart.

3. A cap wrench comprising two jaw members arranged to respectively clamp opposite sides of a jar cap and pivoted to each other at the inner side of and adjacent to the peripheries and at one side of the centers of said members, two channel handles respectively secured to said jaw members and extending outwardly at the opposite side of said centers and having their channels at their inner sides, each handle having abridge portion forced inwardly from its outer side beyond the inner side of the channel, the sides of the bridge portion being cut through so as to form a longitudinal opening between the bridge portion and the inner side of the channel, and a bow spring having its ends respectively mounted in said openings, the bridge portions being set down to form kinks in the spring, the spring being arranged to force said handles apart.

In testimony whereof I have signed my name to this specification.

JOHN DUDEK. 

